Bobbin support



Nov. 20, 1928. 1,692,459

7 J. v. MANN ET AL,

BOBBIN SUPPORT Filed Aug. 14, 1926 NV NTORS. 64

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A 00/5 6. flasaiaz/c/r 4 7 B AT RNEY Patented Nov. 20, 1928.

UNITED STATES 1,692,459 PATENT OFFICE.

JOHN V. MANN AND LOUIS B. HASBROUCK, F ELMIRA, NEW YORK, ASSIGNORS TO. ECLIPSE TEXTILE DEVICES, INC., OF ELMIRA HEIGHTS, NEW YORK.

BOBIBIN SUPPORT.

Application filed August 14, 1926. Serial No. 129,117.

This invention relates to bobbin supports, and aims to provide an improved means for mounting rovingjgobbins ,on the creels of spinning frames and the like.

In our co-pending application filed August 12, 1926, Serial No. 128,778, we have described and claimed a bobbin support having a rotary holder depending from a combined thrust and rotary bearing positioned near the upper end of a bobbin on the holder and provided with means for preventing the holder from wabbling during its rotation about the bearing. Our present invention relates to a bobbin support of the same type but involves improvements in the direction to simplification which materially reduce the cost of the bobbin support without in any way impairing its efiiciency. The nature of this improvement will appear from a detailed description of a specific bobbin support embodying the invention and shown 1n the accompanying drawings, in which Fig. 1 is a transverse sectional elevation of .the upper part of a spinning frame of usual construction showing the creel provided with bobbin supports embodying the invention;

Fig. 2 is a large scale axial section of one of the bobbin supports shown in Fig. 1, showing part of a bobbin supported by it; and

Fig. 3 is a section on the line 3-3 of Fig. 2 The bobbin support shown in the drawings has a fixed central stud 10. The upper portion 11 of the stud, which is inserted in a hole in a creel board F is made of less dias ameter than the rest of the stud to provide a shoulder 13, and is threaded for the application of a nut 14, which co-operates with the shoulder 13 in holding the stud on the creel board. An inverted bearing cone 15 is set on the stud just below the shoulder 13. This cone may be secured on the stud in any desired manner. A convenient mounting it consists ingiving it a free fit on the stud and providing a split ring 16 set in 46 a circumferential groove 17 in'the stud to prevent the cone from slipping down.

A rotary bobbin holder 20, having the form of a sleeve, depends from a set of bearing balls 21 so ported on the cone 15. The upper edge 0 the sleeve 20 is turned in toprovide a curved lip 22 which extends inwardly over the balls 21. The upper end of the sleeve lies just inside a depending flan e23 of a fixed dust cap 24 resting on the s oulder 13 56 of the stud. I a

method of To prevent the sleeve 20 and a bobbin mounted thereon from wabbling as they rotate on the bearing balls 21, the bottom of the sleeve is provided with a closure 25 containing a central hole 26 which surrounds a pin 27 projecting from the lower end of the stud 10 and most desirably formed integral therewith. The closure 25 consists of a disk 28 having an annular flange 29 which fits tightly within the lower end of the sleeve. Besides preventing wabbling, the closure 25 serves, by engagement with a shoulder 30 on the stud 10 at the base of the pin 27, to maintain the sleeve, stud and bearing balls in assembled condition before the stud is set in the creel board of a spinning frame.

Resilient gripping means are provided to engage the inner surface of a bobbin and hold it upon the sleeve 20. To rovide for such means, the portion of the s eeve below theball bearing is provided withtwo sets of diametrically opposite holes31, 32. Two flat expansion springs 33, 34 are located within the sleeve 20 and provided with externalv bosses 35 which project through the holes 31, 32 in the sleeve and grip the bore of a bobbin placed on the sleeve.

The sleeve 20 is provided with a stop'to prevent a bobbin placed on it from being pushed up far enough to bring its upper end into contact with the upper creel board, thus impeding its rotation. In the form shown, this stop consists of an annular rib 36 which is adapted to engage the small internal shoulder A with which roving bobbins B are provided near their upper ends.- At the same time, the peripheral surface of the rib engages the enlarged bore of the bobbin above this shoulder and thus co-operates with the spring grips in holding thebobbin securely upon the sleeve.

It should be noted that the bobbin support which has been described may be manufactured at small cost because of the small number of parts of which it is composed and the simplicity of these parts.

The use of the device described is illustrated in Fig. 1, which shows the table 0, the thread boards D, and the drawing rolls E of a spinning frame of usual construction rovided with. three superimposed creel oards F, F, F, for supporting two tiers of roving bobbins 'B. Bobbin su ports of the form which has been descrlbe are applied to the frame bysecuring the upper parts 11 of their studs 10, in holes in the upper and middle creel boards F and F so that theirrotatable holders 20 depend from these I boards. It 'will be noted that the depending holders 20 are so short that there 1s room between the lower end of each holder and the upper surface of the next c'reel board below, to permit the lacing of roving bobbins on the holders, and their removal therefrom. It will be noted also that the bobbins which are mounted on the holders have their lower ends entirely free and some distance above the next creel board below-them, so that it is'easy The engagement between the'closures 32 and the pins 35 prevents the bobbins from Wabbling, but as the whole weight of the bobbins is supported from the ball bearings, and the bobbins, of course, tend to hang vertically,

the pressure of the closure on the pin is very slight and cannot create suflicient friction to retard the rotation of the bobbins.

vWhile the new bobbin support is, as above explained, adapted for use with the .creel boards of existing spinning frames, it is apparent that in new spinning frames designed to be equipped with the new supports, the

lower creel board may be altogether omitted, and the-upper and middle creel boards may be replaced by metal bars with holes for the studs of the bobbin supports. With this arrangement, all the lint from the roving bobbins falls to the floor under the s inning frame so that the problem of cleaning the creel boards is eliminated altogether.

What is claimed is:

1,. A bobbin support, comprising a ballbearing, means for supporting said ball bearing, and a sleeve having at its upper edge an incurved lip extending over said ball bearing to suspend the sleeve therefrom.

2. A bobbin support, comprising a sleeve having an incurved lip at its upper edge, and a fixed stud extending into said sleeve,

an upturned ball race on said stud, and a set of bearing balls between said race and the lip of the sleeve.

3. A bobbin support,comprising a sleeve having an incurved lip at its upper edge, and a fixed stud extending into said sleeve, an upturned ball race on said stud, a set of bearing balls between said race and the lip of the sleeve, and a closure for the lower end of the sleeve containing a central hole through which;the lower end of the stud projects.

4. A bobbin support, comprising a sleeve having an incurved lip atlts upper edge, a fixed stud extending into said sleeve from its upper end, an upturned ball race on said stud, a set of bearing balls between said race and the lip. of the sleeve, a pin of less diameter than the stud extending from the lower end of' the stud, a closure for the lower end of the bobbin lying close to the lower end of the studwhen the lip rests on the ball bearing and containing a central hole surrounding the pin.

In testimony whereof we have hereunto set our hands.

JOHN V. MANN.

LOUIS B. HASBROUCK. 

